--- x/fs/btrfs/super.c
+++ y/fs/btrfs/super.c
@@ -1644,6 +1644,7 @@ static struct dentry *btrfs_mount_root(s
 	void *new_sec_opts = NULL;
 	fmode_t mode = FMODE_READ;
 	int error = 0;
+	int closed = 0;
 
 	if (!(flags & SB_RDONLY))
 		mode |= FMODE_WRITE;
@@ -1712,6 +1713,7 @@ static struct dentry *btrfs_mount_root(s
 	}
 
 	if (s->s_root) {
+		closed = 1;
 		btrfs_close_devices(fs_devices);
 		btrfs_free_fs_info(fs_info);
 		if ((flags ^ s->s_flags) & SB_RDONLY)
@@ -1727,6 +1729,8 @@ static struct dentry *btrfs_mount_root(s
 		error = security_sb_set_mnt_opts(s, new_sec_opts, 0, NULL);
 	security_free_mnt_opts(&new_sec_opts);
 	if (error) {
+		if (!closed)
+			btrfs_close_devices(fs_devices);
 		deactivate_locked_super(s);
 		return ERR_PTR(error);
 	}